I would say irt depends on the kind of model you want to load.
If the models are static only then a simple mesh as a return will work, but if you import some kind of animation it may be needed to implement some animation handlers to the Core of minib3d (maybe you could take look to my md2 loader).
Also a possibility is to integrate the model loaders in a way that they could use the already implemented animation routines, but that also will need a bit of understanding how minib3d is working under his hood.
So I would start with static mesh support and an import file, like I will do with my try to integrate a collada importer.
Have fun and good luck ;)
If the models are static only then a simple mesh as a return will work, but if you import some kind of animation it may be needed to implement some animation handlers to the Core of minib3d (maybe you could take look to my md2 loader).
Also a possibility is to integrate the model loaders in a way that they could use the already implemented animation routines, but that also will need a bit of understanding how minib3d is working under his hood.
So I would start with static mesh support and an import file, like I will do with my try to integrate a collada importer.
Have fun and good luck ;)